On the detectability of Galactic dark matter annihilation into monochromatic gamma-rays

  • Monochromatic γ-rays are thought to be the smoking gun signal for identifying dark matter annihilation. However, the flux of monochromatic γ-rays is usually suppressed by virtual quantum effects since dark matter should be neutral and does not couple with γ-rays directly. In this work, we study the detection strategy of the monochromatic γ-rays in a future space-based detector. The flux of monochromatic γ-rays between 50 GeV and several TeV is calculated by assuming the supersymmetric neutralino as a typical dark matter candidate. The detection both by focusing on the Galactic center and in a scan mode that detects γ-rays from the whole Galactic halo are compared. The detector performance for the purpose of monochromatic γ-ray detection, with different energy and angular resolution, field of view, and background rejection efficiencies, is carefully studied with both analytical and fast Monte-Carlo methods.
      PCAS:
  • 加载中
  • [1] Gondolo P, Edsj J, Ullio P et al. Journal of Cosmology and Astro Particle Physics, 2004, 7: 82 Catena R, Ullio P. Journal of Cosmology and Astroparticle Physics,2010, 8: 43 Salucci P, Nesti F, Gentile G, Frigerio Martins C. Astron. Astrophys., 2010, 523: A83+4 Komatsu E, Smith K M, Dunkley, J et al. ArXiv e-prints, 2010, arXiv:1001.45385 Navarro J F, Frenk C S, White S D M. Astrophys. J, 1997, 490: 4936 Moore B, Quinn T, Governato F, Stadel J, Lake G. Mon. Not. Roy. Astron. Soc., 1999, 310: 11477 Navarro J F, Ludlow A, Springel V et al. Mon. Not. Roy. Astron. Soc., 2010, 402: 218 Jing Y P, Suto Y. Astrophys. J. Lett., 2000, 529: L699 Berezinsky V S, Gurevich A V, Zybin K P. Physics Letters B, 1992, 294: 22110 Lavalle J, YUAN Q, Maurin D, BI X. Astron. Astrophys., 2008, 479: 42711 Tormen G, Diaferio A, Syer D. Mon. Not. Roy. Astron. Soc., 1998, 299: 72812 Moore B, Ghigna S, Governato F et al. Astrophys. J. Lett., 1999, 524: L1913 Ghigna S, Moore B, Governato F et al. Astrophys. J, 2000, 544: 61614 Zentner A R, Bullock J S. Astrophys. J, 2003, 598: 4915 GAO L, White S D M, Jenkins A, Stoehr F, Springel V. Mon. Not. Roy. Astron. Soc., 2004, 355: 81916 Diemand J, Moore B, Stadel J. Mon. Not. Roy. Astron. Soc., 2004, 352: 53517 Springel V,WANG J, Vogelsberger M et al. Mon. Not. Roy. Astron. Soc., 2008, 391: 168518 Bullock J S, Kolatt T S, Sigad Y et al. Mon. Not. Roy. Astron. Soc., 2001, 321: 55919 Gaisser T K, Honda M, Lipari P, Stanev T. International Cosmic Ray Conference, 2001, 5: 1643-+20 Abdo A A, Ackermann M, Ajello M et al. Physical Review Letters, 2009, 102: 18110121 Aharonian F, Akhperjanian A G, Barres de Almeida U et al. Physical Review Letters, 2008, 101: 26110422 Aharonian F, Akhperjanian A G, Anton G et al. Astron. Astrophys., 2009, 508: 56123 Abdo A A, Ackermann M, Ajello M et al. Physical Review Letters, 2010, 104: 10110124 Sreekumar P, Bertsch D L, Dingus B L et al. Astrophys. J, 1998, 494: 52325 Abdo A A, Ackermann M, Ajello M et al. Astrophys. J, 2009, 703: 124926 Abdo A A, Ackermann M, Ajello M et al. Physical Review Letters, 2009, 103: 25110127 Hunter S D, Bertsch D L, Catelli J R et al. Astrophys. J, 1997, 481: 20528 Bergstrm L, Ullio P, Buckley J H. Astroparticle Physics, 1998, 9: 13729 Aharonian F, Akhperjanian A G, Bazer-Bachi A R et al. Nature, 2006, 439: 69530 Mayer-Hasselwander H A, Bertsch D L, Dingus B L et al. Astron. Astrophys., 1998, 335: 16131 Aharonian F, Akhperjanian A G, Bazer-Bachi A R et al. Physical Review Letters, 2006, 97: 22110232 Abdo A A, Ackermann M, Ajello M et al. Astrophys. J. Supp., 2009, 183: 4633 Aharonian F, Akhperjanian A G, Anton G et al. Astron. Astrophys., 2009, 503: 817
  • 加载中

Get Citation
TANG Zhi-Cheng, YUAN Qiang, BI Xiao-Jun and CHEN Guo-Ming. On the detectability of Galactic dark matter annihilation into monochromatic gamma-rays[J]. Chinese Physics C, 2011, 35(8): 725-734. doi: 10.1088/1674-1137/35/8/006
TANG Zhi-Cheng, YUAN Qiang, BI Xiao-Jun and CHEN Guo-Ming. On the detectability of Galactic dark matter annihilation into monochromatic gamma-rays[J]. Chinese Physics C, 2011, 35(8): 725-734.  doi: 10.1088/1674-1137/35/8/006 shu
Milestone
Received: 2010-11-05
Revised: 1900-01-01
Article Metric

Article Views(2407)
PDF Downloads(651)
Cited by(0)
Policy on re-use
To reuse of subscription content published by CPC, the users need to request permission from CPC, unless the content was published under an Open Access license which automatically permits that type of reuse.
通讯作者: 陈斌, bchen63@163.com
  • 1. 

    沈阳化工大学材料科学与工程学院 沈阳 110142

  1. 本站搜索
  2. 百度学术搜索
  3. 万方数据库搜索
  4. CNKI搜索

Email This Article

Title:
Email:

On the detectability of Galactic dark matter annihilation into monochromatic gamma-rays

Abstract: Monochromatic γ-rays are thought to be the smoking gun signal for identifying dark matter annihilation. However, the flux of monochromatic γ-rays is usually suppressed by virtual quantum effects since dark matter should be neutral and does not couple with γ-rays directly. In this work, we study the detection strategy of the monochromatic γ-rays in a future space-based detector. The flux of monochromatic γ-rays between 50 GeV and several TeV is calculated by assuming the supersymmetric neutralino as a typical dark matter candidate. The detection both by focusing on the Galactic center and in a scan mode that detects γ-rays from the whole Galactic halo are compared. The detector performance for the purpose of monochromatic γ-ray detection, with different energy and angular resolution, field of view, and background rejection efficiencies, is carefully studied with both analytical and fast Monte-Carlo methods.

    HTML

Reference (1)

目录

/

DownLoad:  Full-Size Img  PowerPoint
Return
Return